ENPP2 and squamous cell carcinoma: Analysis confirmed the above results as ENPP2 mRNA was under-expressed in PC (p = 9.31 × 10−3, Figure 5A) and LC (adenocarcinoma, p = 1.68 × 10−3 and squamous cell carcinoma, p = 4.52 × 10−3, Figure 6A,C) and upregulated in HCC (p = 2.38 × 10−10, Figure 7A).